Electronic Throttle Body the usual parts Throttle position sensor Flange Butterfly valve Throttle control valve Accelerator pedal position sensor The mechanic will replace the throttle body on your car if: It can’t be cleaned properly. The throttle flap, throttle shaft, or the mechanical linkages to the throttle cable are damaged. The electronic throttle actuator is faulty. There is a damaged throttle body or TP sensor electrical connector. Additionally, it’d be a good idea to get your cars throttle and fuel delivery system inspected for: .